Liquid-meter.



No. 861,866. PATENTED JULY 30, 1907.

' J. W. LEDOUX.

LIQUID METER.

APPLICATION FILED APB.19. 1906.

WITNESSES: //YVE/VTO R M i W {M M BY A; M Ma m n. M

JOHN W. LEDOUX, OF SWARTHMORE, PENNSYLVANIA.

LIQUID-METER.

Application filed April 19, 1906. Serial No. 312,539-

Specification of Letters Patent.

Patented July 30, 1907.

To all whom it may concern Be it known that 1, JOHN W. LEnoUX,a citizenof the United States, and a resident of Swarthmore, in

the county of Delaware and State of Pennsylvania,-

have invented certain Improvements in Liquid-Meters, of which thefollowing is a specification.

This invention is a liquid meter comprising, in its preferredconstruction, a pair of float chambers connected respectively with anormal and contracted section of a conduit, floats in the respectivechambers With connecting mechanism for adjusting the position of a camrelatively thereto, and constantly operating mechanism regulated by theposition of the cam ior indicating the flow in the conduit.

In the drawing the figure represents a diagrammatic View of theinvention.

The apparatus comprises the conduit 1 having the parts 2 and 3contracting to the throat 4. A tube 5 With the drop 5 therein leads froma normal section of the conduit to the float chamber 6, and a tube 7with the drop 7 therein leads from the throat of the conduit to thefloat chamber 8. A float 9 in the chamber 6 is connected by a cord 10with a sheave 11 revolving on a stationary axis 12, and a float 13 inthe chamber 8 is connected by a cord 14 which passes over a sheave 15revolving on a stationary axis 16, and under a sheave 17 revolving on amovable axis 18 to the sheave 1], the parts being balanced by acounter-poise 19 connected by a cord 20 with the sheave. A rod 21 withthe cam 22 thereon is carried by the sheave l7 and reciprocates in theguides 23, a roller 24 in the rear of the cam supporting it. A lever 25with a tappet 26 oscillates upon the axis 27 between the cam 22 and afixed stop 28, the lever being operated by having an arm 29 which iselevated at regular intervals by a clock 30 and lowered by a weight 31.A spur wheel 32, revoluble on the axis 27, is adapted to be engaged andoperated by the clutch 33 carried by the lever arm. In the movement ofthe lever in one direction the clutch grips and actuates the Wheel,while in the opposite movement of the lever the clutch runs free, aclutch mechanism 34 preventing aretrograde movement of the wheel. Aregister or indicating mechanism 35 is operated by the step by stepmovement thus imparted to the spur Wheel. 7

In the usual operation, the pressure of the fluid in the conduit 1 iscommunicated through the tubes 5 and7 'to a heavier fluid as mercurycontained in the parts v 5, 6 and 7,

8. When there is no flow in the conduit, the pressure in the tubesreaches the maximum and the fluid in the chambers 6 and 8 lifts thefloats 9 and I 13 to a common elevation;

The weight 19, acting with the floats causes the sheave l7 and the rod21 to move to a position such that the cam 22 holds the tappet lever 25back upon the stop 28 and no motion is imparted to the register. As thevelocity oiflow in the conduit increases to the maximum, the pressure inthe tubes 5 and 7 decrease at unequal rates, so that the float 13 iallsmore rapidly than the float 9, causing the sheave l7 and the rod 21 tomove the cam 22 toward the position at which the tappet 26 and the lever25 have their greatest arc of oscillation, the stroke of the tappetlever 25 increasing with the rate oi flow so that the register 35 isoperated to indicate the volume of flow.

Having described my invention 1 claim:

1. A meter comprising a float, mechanism including a rectilineallyreciprocating cam connected with and operated by said float, a tappctlever oscillating in an arc limited by the position of said cam, meansfor oscillating said lever an indicating apparatus, and mechanismwhereby said lever operates said apparatus.

2. A meter comprising a conduit, a chamber connected with said conduit,a float in said chamber, mechanism includinga rectilinenllyreciprocating cam connected with and operated by said float, anoscillating tappet lever controlled by said cam, means for oscillatingsaid lever a register, and mechanism whereby said lever operates saidregister.

A meter comprising a conduit having a contracted section, a pair offloats adapted for movement at different rates, means for communicatingpressure from a normal section and from said contracted section to therespective floats, a cam, and mechanism for communicating thedifferential movements of said floats to said cam.

-l. A meter comprising a rectilineally reciprocating cam, a tappetmechanism limited in movement by the position of said-cam, an indicatingmechanism, and means oper ated by said tappet mechanism for actuatingsaid indicating mechanism.

5. A meter comprising a conduit, :1 pair of tubes with drops therein,said drops being connected with sections of said conduit, subject todiiferent pressures a pair of floats movable respectively with themovement of liquid in the respective tubes, at rcctilineallyreciprocating cam, mechanism for communicating the differential movementof said floats to said cam, and indicating apparatus connected with andoperating under control of said cam.

(3. A meter comprising a conduit, :1 pair of tubes connected withsections of said conduit subject to different pressures and terminatingin independent chambers, 21 float in each chamber, :1 reciprocating cam,a sheave connected to said cam, a pair of sheaves, and means forconnecting said floats with said sheaves whereby the differentialmovements of said floats are communicated to said cam.

7. A meter comprising a conduit, a pair of vessels having liquidconnection only through said conduit, floats in said vessels and anindicating device operated under the influence of said floats.

S. A meter comprising a conduit, a tube having a drop therein connectedwith said conduit, said drop comprising downwardly and upwardlyextending members a float movable in said upwardly extending member byfluid pressure communicated from said conduit through said tube, andindicating means connected with said float, said float being movablesolely by pressure communicated through said tube.

9. A meter comprising a liquid conduit, an open tube connected with saidconduit and containing a liquid heavier than that in said conduit, afloat movable in said tube by the movements of said heavier liquid andindi- 10' eating mechanism connected with said float.

In'witness whereof I have hereunto set my name this 14th day of April,A. D. 1906 in the presence of the subscribing witnesses.

JOHN W. LEDOUX.

Witnesses CHARLES N. BUTLER, CARLYLE H. Ross.

